Abstract

This study aims to enhance the photocatalytic properties and stability of polyaniline (PANI) by preparing polyaniline–metal oxide composites. Polyaniline and polyaniline–metal oxide composites were synthesized via chemical polymerization method and characterized by using scanning electron microscopy, X-ray diffraction (XRD), energy-dispersive X-ray analysis, and Fourier transform infrared spectrometry. The morphological characteristics of the polymers synthesized in media with and without metal oxide are quite different from each other. These differences are due to the presence of metal oxides in the polymer structure, and the interactions between PANI–metal oxides, as mentioned in the XRD interpretations. The photocatalytic properties of polyaniline and each polyaniline–metal oxide composite were investigated using methylene blue (MB) under UV light and in the dark. (MB is one of the pollutant dyes found in wastewater.) The findings showed that photocatalytic property and stability of polyaniline can be enhanced by preparing the polyaniline–metal oxide composites. The E_g values of the selected metal oxides are around 3 eV values. The metal oxides, having the 3 eV energy bandgap range, exhibit better photocatalytic properties.

Graphic Abstract

It was aimed to investigate the photocatalytic properties and to increase the photocatalytic properties of polyaniline with the metal oxide. Polyaniline–metal oxide composites were synthesized and characterized. And their photocatalytic properties of each oxide composite were investigated by degradation of methylene blue under UV light and in dark media.

中文翻译：

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提高聚苯胺导电聚合物的光催化稳定性和光催化性能

摘要

本研究旨在通过制备聚苯胺-金属氧化物复合材料来增强聚苯胺（PANI）的光催化性能和稳定性。聚苯胺和聚苯胺-金属氧化物复合物是通过化学聚合方法合成的，并通过扫描电子显微镜，X射线衍射（XRD），能量色散X射线分析和傅里叶变换红外光谱进行表征。在有金属氧化物和无金属氧化物的介质中合成的聚合物的形态特征彼此完全不同。这些差异是由于XRD解释中提到的聚合物结构中金属氧化物的存在以及PANI-金属氧化物之间的相互作用。使用亚甲基蓝（MB）在紫外线和黑暗条件下研究了聚苯胺和每种聚苯胺-金属氧化物复合物的光催化性能。（MB是废水中发现的污染染料之一。）研究结果表明，制备聚苯胺-金属氧化物复合材料可以提高聚苯胺的光催化性能和稳定性。的所选金属氧化物的E _g值约为3 eV。具有3 eV能带隙范围的金属氧化物表现出更好的光催化性能。

图形摘要

目的是研究金属氧化物对聚苯胺的光催化性能并提高其光催化性能。合成并表征了聚苯胺-金属氧化物复合材料。并通过在紫外光和黑暗介质中降解亚甲基蓝，研究了每种氧化物复合材料的光催化性能。